Leopard & Up

1. Launch the System Preferences

2. Select the Sharing preferences

3. Enable Screen Sharing or
Remote Management

4. Enable VNC [...] with password:
in the Computer Settings… sheet and enter a password. Settings for Remote Management are presented differently but remain the same.

5. Open NumPad and tap the Settings Button on the upper right

6. Tap the Detail Disclosure Button for the computer you want to connect to

7. Tap on the Password to set the VNC Server Password

8. Go back to the Server List and tap on the Computer to connect

Tiger

1. Launch the System Preferences

2. Select the Sharing preferences

3. Enable Apple Remote Desktop

4. Enable VNC viewers may control screen with password: in the Access Privileges… sheet and enter a password

5. Open NumPad and tap the Settings Button on the upper right

6. Tap the Detail Disclosure Button for the computer you want to connect to

7. Tap on the Password to set the VNC Server Password

8. Go back to the Server List and tap on the Computer to connect

Windows XP
With RealVNC

1. Double-click the RealVNC tray icon

2. Select VNC Password Authentication and click Configure

3. Enter a password

4. Hover your mouse on the RealVNC icon to see your computer IP Address

5. Open NumPad and tap the Settings Button on the upper right

6. Tap on the Add Button on the upper left

7. Type a Name for your server, it's IP Address, Port and Password. Tap Save when done

8. Go back to the Server List and tap on the Computer to connect

Vista and up
With TightVNC

1. Double-click the TightVNC tray icon (Note: on Windows 7, you may need to start the TightVNC server manually from the Start menu)

2. Type in a Password and unselect "Remove desktop wallpaper". Click OK.

3. Hover your mouse on the TightVNC icon to see your computer IP Address.

4. Open NumPad and tap the Settings Button on the upper right

5. Tap on the Add Button on the upper left

6. Type a Name for your server, it's IP Address, Port and Password. Tap Save when done

7. Go back to the Server List and tap on the Computer to connect